Officials say the drugs, which have a combined street value of more than $6 million, were found in thin packages lining the inside of the boxes.

The shipment arrived on the bulk carrier Santa Maria and was destined to a distributor in New York City. An on-site test by U.S. Customs and Border Protection officials determined the substance was cocaine.

Philadelphia DEA special agent Gary Tuggle says his office received a tip that was passed on to CBP officers at the port.